body{
    margin: 0;
    padding: 0;
    background-image: url(./4.jpg);
    background-size: 1536px 754px;
    background-repeat: no-repeat;
    background-color: #000;
    overflow: hidden;
}

.xh{
    position: absolute;
    color: white;
    top: 100px;
    left: 100px;
    opacity: 0.5;
    font-size: 50px;
}